Leaderboard + referral contest: /leaderboard (week/month/all, read from chain, own positions excluded), Overview card with own rank, weekly and monthly winners recorded at rollover with credit ladders granted automatically and announced to Telegram

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

public/assets/common.js

@@ -53,7 +53,7 @@ window.IAP = (function () {
     f.style.cssText = 'border-top:1px solid var(--line);margin-top:48px;padding:26px 22px;text-align:center;color:var(--muted);font-size:13px';
     f.innerHTML = '<div>© ' + new Date().getFullYear() + ' InstantAdPay</div>'
       + '<div style="margin-top:8px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap">'
-      + '<a href="/">How it works</a><a href="/ledger">Live ledger</a><a href="/contract">The contract</a><a href="/blog">Blog</a><a href="/whats-new">What\'s new</a>'
+      + '<a href="/">How it works</a><a href="/ledger">Live ledger</a><a href="/contract">The contract</a><a href="/blog">Blog</a><a href="/leaderboard">Leaderboard</a><a href="/whats-new">What\'s new</a>'
       + '<a href="/terms">Terms</a><a href="/privacy">Privacy</a><a href="/disclaimer">Disclaimer</a></div>';
     document.body.appendChild(f);
   }